| 18946 | Castle of Doom + Missile Command | ZX-Spectrum 48K | English |
| 6069 | Castle of Dreams | ZX-Spectrum 48K | English |
| 27213 | Castle of Lost Souls | ZX-Spectrum 48K | English |
| 9585 | Castle of Terror | ZX-Spectrum 48K | English |
| 6070 | Castle of the Skull Lord | ZX-Spectrum 48K | English |
| 13178 | Castlemaze Adventure | ZX-Spectrum 48K | English |
| 40926 | Castles | ZX81 16K | English |
| 11562 | Castles and Clowns | ZX-Spectrum 48K | English |
| 36453 | Castles of Oktogonia | ZX-Spectrum 48K | English |
| 27327 | Castlevania Level 1 Music Soundtracker Cover | ZX-Spectrum 48K | English |
| 7301 | Castor Intro 10: Auf Wiedersehen | ZX-Spectrum 48K | English |
| 7302 | Castor Intro 2: Trap Door | ZX-Spectrum 48K | English |
| 7303 | Castor Intro 3: Ocean | ZX-Spectrum 48K | English |
| 7304 | Castor Intro 4: Balls | ZX-Spectrum 48K | English |
| 7305 | Castor Intro 5: Boing Boomchack | ZX-Spectrum 48K | English |
| 7306 | Castor Intro 6: Monster Banquet | ZX-Spectrum 48K | English |
| 7307 | Castor Intro 8: Dan There | ZX-Spectrum 48K | English |
| 7308 | Castor Intro 9: Move That Army | ZX-Spectrum 48K | English |
| 841 | Cat 'n Mouse | ZX-Spectrum 16K | English |
| 26631 | Cat 'n' Mouse | ZX-Spectrum 48K | English |